Breeding Methods to Produce Progeny for Advanced-generation Selection and to Evaluate Parent Trees

1972 ◽  
Vol 2 (3) ◽  
pp. 339-345 ◽  
Author(s):  
B. J. Zobel ◽  
R. J. Weir ◽  
J. B. Jett
Keyword(s):  
Breeding Value ◽  
Progeny Testing ◽  
State University ◽  
Improvement Program ◽  
North Carolina State University ◽  
The North ◽  
Genetically Improved ◽  
The Cost ◽  
University Industry ◽  
Advanced Generation

The North Carolina State University – Industry Cooperative Tree Improvement Program has followed two major lines of development: (1) Production seed orchards to supply large quantities of genetically improved stock, (2) research clone banks to be used as a gene pool for advanced-generation seed orchards.Results from current progeny tests reveal the occurrence of parent trees with strong general combining ability and occasional outstanding specific combinations. Thus, many of the best trees selected from open-pollinated or pollen-mix progenies would be half-sibs or full sibs. It is, therefore, essential that the parentage of trees used in advanced-generation orchards be known if the presumed detrimental effects of inbreeding are to be avoided. A conscious effort must be continuously made to maintain a broad genetic base for advanced-generation breeding populations.Where the cost of testing in terms of time and money is critical it is important to use a progeny-testing scheme that: (1) gives an assessment of parental breeding value, and (2) provides unrelated families of known parentage from which selections for advanced-generation orchards can be effectively made. The tester design satisfies these criteria for organizations having several orchards, each with different testers, so that material can be freely exchanged for future generations. A suggested alternative for organizations with limited resources or specialty orchards is a partial diallel design.

scholarly journals The Success of Tree Breeding in the Southern US

BioResources ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 1-2 ◽  
Author(s):  
Steve McKeand
Keyword(s):  
North Carolina ◽  
Pinus Taeda ◽  
Loblolly Pine ◽  
Tree Breeding ◽  
Tree Improvement ◽  
State University ◽  
Improvement Program ◽  
North Carolina State University ◽  
The North ◽  
Southern Us

Nowhere in the world have tree improvement and silviculture had a bigger impact on forest productivity and value to landowners than in the southern US. The economic impact from almost 60 years of tree improvement in the southern United States has been staggering. For example, over 300,000 hectares are planted each year with seedlings from the breeding efforts with loblolly pine (Pinus taeda) by members and staff of the North Carolina State University Cooperative Tree Improvement Program. The present value of continued genetic gains from traditional tree improvement efforts is estimated to be $2.5 billion USD to landowners and citizens in the southern US.

Green ‘N’ Growing: Digitizing Historical 4-H and Home Demonstration Materials

2007 ◽  
Vol 36 (2) ◽  
Author(s):  
Todd J. Kosmerick ◽  
Amy Rudersdorf ◽  
Brian Dietz
Keyword(s):  
North Carolina ◽  
Web Site ◽  
State University ◽  
North Carolina State University ◽  
The North ◽  
Home Demonstration

During the summer of 2004, the North Carolina State University (NCSU) Libraries commenced a two-year project to create a resource-based research and educational web site titled

Place of Wood Specific Gravity in the Development of Advanced-Generation Seed Orchards and Breeding Programs

1982 ◽  
Vol 6 (3) ◽  
pp. 177-180
Author(s):  
J. B. Jett ◽  
J. T. Talbert
Keyword(s):  
Specific Gravity ◽  
Loblolly Pine ◽  
Second Generation ◽  
Improvement Program ◽  
Breeding Programs ◽  
The North ◽  
Wood Specific Gravity ◽  
High Heritability ◽  
Pinus Taeda L ◽  
Advanced Generation

Abstract Data from thinnings of 11 genetic tests with an average age of 10 years and from 364 eight-year-old second-generation selections were analyzed to provide an estimate of gain from one cycle of selection for wood specific gravity. Utilizing mid-parent, mature, wood specific gravities and progeny juvenile wood specific gravities, coefficients of genetic prediction, CGP = 0.55 and 0.41, were calculated for the genetic test thinning sample and second-generation selection sample. Expressed as a percentage of the mean, gain from selection was calculated to be 2.6 percent. A strategy was also developed to include wood specific gravity in the North Carolina State Cooperative's second-generation loblolly pine (Pinus taeda L.) improvement program. High heritability figures indicate little need to develop extensive family information for wood specific gravity in advanced-generation breeding programs.

Chromatophoroma in a Siamese fighting fish (Betta splendens)

2019 ◽  
Vol 7 (2) ◽  
pp. e000840 ◽  
Author(s):  
Chelsea Ciambrone ◽  
Laura R Chen ◽  
Debra A Tokarz ◽  
Gregory A Lewbart
Keyword(s):  
North Carolina ◽  
Needle Aspiration ◽  
Siamese Fighting Fish ◽  
Postmortem Examination ◽  
Betta Splendens ◽  
State University ◽  
Aggressive Treatment ◽  
Fine Needle ◽  
North Carolina State University ◽  
The North

An adult male blue Siamese fighting fish (Betta splendens) presented to the North Carolina State University College of Veterinary Medicine with a cranial mass located dorsal to his right eye. A fine-needle aspiration was performed followed by supportive care. Due to the patient’s small size aggressive treatment was not elected. The mass continued to expand over a course of five months until the patient was found deceased, and a postmortem examination was performed. Histopathology determined the mass to be a chromatophoroma of the iridophoroma or leucophoroma subtypes. This is the first documentation of a chromatophoroma in B splendens.

scholarly journals A Comprehensive Wellness Program for Veterinary Medical Education: Design and Implementation at North Carolina State University

2016 ◽  
Vol 6 (1) ◽  
pp. 74 ◽  
Author(s):  
Kenneth D. Royal ◽  
Keven Flammer ◽  
Luke Borst ◽  
Jeffrey Huckle ◽  
Hillary Barter ◽  
...  
Keyword(s):  
North Carolina ◽  
Medical Education ◽  
Physical Health ◽  
Learning Community ◽  
Emotional Health ◽  
State University ◽  
Wellness Program ◽  
North Carolina State University ◽  
The North ◽  
Education Design

Research in veterinary medical education has illustrated the challenges students face with respect to mental and emotional wellness, lack of attention to physical health, and limited opportunities to meaningfully engage with persons from different backgrounds. In response, the North Carolina State University College of Veterinary Medicine has adopted a comprehensive wellness program available to all members of the college community. The wellness program is based on a ‘house system’ learning community model and focuses on five broad outcome categories: intellectual growth; mental and emotional health; social distance reduction; cultural competence; and physical health. This case study paper describes the development and implementation of the model at this institution.

Descriptive Epidemiology for Turtles Admitted to the North Carolina State University College of Veterinary Medicine Turtle Rescue Team

2016 ◽  
Vol 7 (2) ◽  
pp. 520-525 ◽  
Author(s):  
Lauren Stranahan ◽  
Kristine M. Alpi ◽  
Ronald Kent Passingham ◽  
Todd J. Kosmerick ◽  
Gregory A. Lewbart
Keyword(s):  
North Carolina ◽  
Veterinary Medicine ◽  
Medical Records ◽  
Human Interaction ◽  
Valuable Insight ◽  
State University ◽  
North Carolina State University ◽  
The North ◽  
Rescue Team ◽  
University College

Abstract The North Carolina State University College of Veterinary Medicine Turtle Rescue Team has been treating and releasing wild turtles since 1996 and has compiled a collection of almost 4,000 medical records, now available for consultation by researchers via the North Carolina State University Libraries Special Collections Research Center. Data available for each case include county where turtle was discovered, patient identification number, admission date, species, sex and reproductive status, physical examination findings, clinical diagnosis, last case-entry date, length of stay, and final disposition. Additional data in the records include a day-by-day description of treatment and husbandry performed for each turtle. This report summarizes 2,613 turtle cases examined between 1996 and 2012 by the Turtle Rescue Team, including 12 native species of turtle from 63 North Carolina counties. The sex distribution of those of known sex were evenly distributed. The most common presenting condition was vehicular trauma while garden equipment and fish-equipment–related trauma, pet surrender, and other human-induced injury represented an additional 154 cases. Animal attacks and trauma due to unknown causes were also represented. Other conditions diagnosed on presentation included infection, aural abscessation, nutritional disorder, neurologic disorder, buoyancy disorder, prolapse, and other. A small number of turtles were not diagnosed or were healthy. Ultimate disposition data were available for 2,318 turtles, of which 1,227 were released to the wild. The epidemiological data presented here are similar to information collected in Illinois, Tennessee, and Virginia. Medical records from wildlife hospitals and primary care facilities represent an important opportunity to gain valuable insight into the epidemiology of human interaction with native wildlife species.

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